Mixed-amine functionalized SBA-15 for CO<sub>2</sub> adsorption

JING Yu; WEI Li; WANG Yundong; YU Yanmei

doi:10.3969/j.issn.0438-1157.2014.01.043

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Mixed-amine functionalized SBA-15 for CO₂ adsorption

更新时间：2025-12-10

- Mixed-amine functionalized SBA-15 for CO₂ adsorption
- CIESC Journal Issue 1, Pages: 328-336(2014)
- 作者机构：
  
  1. 清华大学化学工程系, 化学工程联合国家重点实验室,北京,100084
  2. 北京化工大学化学工程学院,北京,100029
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.01.043
  CLC： Q028.2
- Online First：05 January 2014，
  
  Published：05 January 2014
- 稿件说明：
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JING Yu, WEI Li, WANG Yundong, et al. Mixed-amine functionalized SBA-15 for CO₂ adsorption[J]. CIESC Journal, 2014, (1): 328-336. DOI: 10.3969/j.issn.0438-1157.2014.01.043.
DOI：

JING Yu, WEI Li, WANG Yundong, et al. Mixed-amine functionalized SBA-15 for CO₂ adsorption[J]. CIESC Journal, 2014, (1): 328-336. DOI: 10.3969/j.issn.0438-1157.2014.01.043. DOI：

摘要

为实现廉价高效的二氧化碳捕集，新型燃烧后CO2捕集固体吸附材料的设计和开发具有重要的研究意义。为提高CO2吸附量，胺功能化改性吸附剂的方法主要有湿浸渍和表面嫁接。基于此，提出了“混合胺”修饰的概念，把湿浸渍和表面嫁接两种改性技术结合起来。把3-氨丙基三甲氧基硅烷（APTS）嫁接到分子筛SBA-15孔道表面，再把聚乙烯亚胺（PEI）浸渍到载体孔道的间隙，制备出高密度胺功能化的CO2吸附剂。主要考察了不同含量的PEI和APTS功能化SBA-15的结构性能、CO2吸附量及胺吸附效率。CO2吸附结果表明，混合胺功能化SBA-15吸附主要依赖于动力学扩散。其中，SBA-15-（APTS-0.5-PEI-50），SBA-15-（APTS-1.0-PEI-50）和SBA-15-（APTS-2.0-PEI-30）在75℃时具有很好的吸附潜力。混合胺功能化SBA-15的胺吸附效率介于单纯嫁接和单纯浸渍的胺功能化SBA-15之间。

Abstract

To achieve an economical and effective approach of CO2 capture

design of novel adsorbents for post-combustion CO2 adsorption has important significance. To improve CO2 adsorption capacity

two methods of wet impregnation and surface grafting have been used recently. "Mixed-amine" concept was proposed and these two methods were combined in this paper. 3-Aminopropyltrimethoxysilane (APTS) was first grafted onto the surface of SBA-15 and then polyethylenimine (PEI) was impregnated into the space of pores. This novel adsorbent possessed a very high density of amine groups. The structural property

CO2 adsorption capacity and amine efficiency of mixed-amine functionalized SBA-15 with different ratios of APTS and PEI were investigated. The CO2 adsorption result showed that the performance of mixed-amine functionalized SBA-15 depended on kinetic diffusion. SBA-15-(APTS-0.5-PEI-50)

SBA-15-(APTS-1.0-PEI-50) and SBA-15-(APTS-2.0-PEI-30) could be identified as potential adsorbents at 75℃. The amine efficiency of mixed-amine functionalized SBA-15 was between purely impregnated and grafted ones.

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Mixed-amine functionalized SBA-15 for CO2 adsorption

DOI：10.3969/j.issn.0438-1157.2014.01.043

摘要

Abstract

关键词

Keywords

references

Mixed-amine functionalized SBA-15 for CO₂ adsorption